Rear wing for an automobile



FIG. 1 is a front view of a rear wing for an automobile of our present design;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a front, left perspective view thereof.

Portions of the rear wing for an automobile shown in broken lines form no part of the claimed design. 

CLAIM The ornamental design for a rear wing for an automobile, as shown and described. 